Air conditioning apparatus



A ril 26, 1938. H. s WOODRUFF AIR CONDITIONING APPARATUS Filed Feb. 9, 1957 2 Sheets-Sheet 1 F 0 T E V m Ap 26, 1938. H. s. wooDRuFF AIR CONDITION ING APPARATUS 2 Sheets-Sheet 2 Filed Feb. 9, 1957 l i i L INVE TOR w ATTORNE$ E Patented Apr. 26, 1938.

UNITED STATES 2.115.295 AIR CONDITIONING APPARATUS Henry S. Woodrufi, Larchmont, N. Y., assignor to Heating Ventilating & Air Conditioning 00. Inc., New York, N. Y., a. corporation of New York ' Application February 9, 1937, Serial No. 124,816

4 Claims.

This invention is directed to an improvement in air conditioning equipment, and has for one of its objects the provision of a simple, compact, relatively inexpensive and very eflicient unit.

My improved equipment, in general, comprises an enclosing cabinet within which I provide a compressor, a motor for driving the same, a condenser, a fan for air cooling the compressor, motor and condenser, conditioning or evaporating coils being provided in the upper part of the enclosing cabinet together with an air circulating fan by which air to be conditioned is drawn into the cabinet and then discharged therefrom. The compressor, motor and fans are vertically disposed and in vertical alignment and the condenser is of the coil type and surrounds the motor; this construction, as will be appreciated, conserving floor space.

The air conditioning equipment illustrated in the accompanying drawings also includes new and novel means for re-evaporating and disposing of moisture condensing on the cooling or conditioning coils. This feature is claimed in my copending application Serial No. 106,547, filed October 20, 1986, of which the present application is a division, and this structure, therefore, will not be described in great detail herein.

In the drawings: Fig. 1 is a sectional elevational view of an embodiment of my invention;

Fig. 2 is a section on the line 2-2 of Fig. 1; and

Fig. 3 is a section on the line 33 of Fig. 1. Referring to the drawings in detail: 2 designates an enclosing cabinet which may be of wood or metal and is felt lined for sound-deadening or sound-absorbing purposes, as shown at 3.

At the upper part of the cabinetis an air conditioning chamber 4 which will be referred to more in detail hereinafter. The cabinet 2 is provided in its side walls with air intake grilles 5 and in its roof with air discharge grilles 6. The grilles 5 are equipped with filters I which are-removable for cleaning or for replacement for filtering the air passing into the chamber I through the grilles 5.

8 designates the base of my improved equip-- ment, this base supporting the cabinet 2 which is removably mounted thereon.

Within the lower part of the cabinet 2, that is to say, below the conditioning chamber 4 is a compressor 9 driven by an electric motor ill, the motor being disposed vertically and in vertical alignment with the compressor.

As will be seen from the drawings, the arma-' ture shaft ll oi. the motor is extended vertically above the motor and carries a centrifugal fan l2. This fan is positioned below a partition 13 which extends transversely of the cabinet and which constitutes the floor or lower wall of the conditioning chamber i, and the armature shaft I I extends through this floor l3 and carries at its upper end an air circulating fan M which is located within the conditioning chamber 4, this fan being. provided for the purpose of drawing air through the grilles 5 into the chamber 4 and discharging the air out of the chamber to the surrounding atmosphere through discharge grilles 6.

Surrounding the motor III are banks of condenser coils l5.

The-partition l3 constituting the floor of the conditioning chamber 4, the centrifugal fan 12, the housing ii for this fan, compressor 9, driving motor and the condenser coils 15 are all mounted within a cylindrical shell l1 covered with acoustic felt it and mounted within the cabinet 2 and extending vertically thereof. The shell I! is supported on the base 8.

Secured to the inside-of the shell I! are mounting brackets 19 carrying the motor III and compressor 9, the attachment of the motor to these brackets being through a resilient connection 20. The brackets are somewhat flexible in the direction of rotation of the motor I 0' to reduce to some extent the transmission of torsional stresses to the shell II. The condenser coils 15, which as above mentioned are also within the shell I1, are I suspended from the the upper set of mounting brackets l9 by hangers 2i. The shell I! is disposed eccentrically to the drawn into the cabinet and discharged therefrom by the centrifugal fan I 2, as will be understood,

' and in its passage through the shell l1 air cools the compressor 9, motor l0 and condenser Iii,

The airconditioning chamber 4 is provided cabinet and is open at its lower end,which prowith evaporating coils 24 mounted in hangers 25 the upper ends of which are attached to the oriflce 26 for the circulating fan I. The lower ends of these hangers 25 are secured to the floor l3 of the conditioning chamber. It will be seen from an inspection of the drawings that the evaporating coils 24 surround the fan I so that all air drawn into thejconditioning chamber by the fan is. caused to pass over these coils.

The refrigerant c mpressed by the compressor 9 passes byway of tubing 21 tothe intake end of coils 28 which lie directly-beneath and in good thermal contact, with the underside of the floor or bottom 29 of the housing lifor the fan l2.

The discharge en-d'of the tubing 28 is connected by pipe or tubing. 30 to the upper header 3| of the condenser coils l5 so 'that'the refrigerant passes from the.- tubing 28 through the condenser coilslijand into the liquid receiver 32. The gas passing through the tubing 30 is at the hottest part -oi its'cycle and the tubing being in thermal contact with the fan housing l6, heat is absorbed from the gas passing through this tubing, thusvery materially reducing the work required of the condenser l5.

The-liquid refrigerant is forced out of this receiver' .by the compressor 9 through tubing 33 which extends vertically of the cabinet along the interior of the shell I! to the conditioning chamber 4 and expansion valye 34, the refrigerant expanding in the. expansion or evaporating coils 24 and returning to the intake sideof the compressor by way of pipe 35.

In assembling the entire internal components of my apparatus as a unit are placed upon the base 8 and secured in place after which the cabinet 2 is placed in position on the base 8, or if the yielding support for the unit is at the .top of the apparatus the cabinet 2 is first placed over this unitary structure after which spring connections 36 are made.

What I claim is:-

1. Air,conditioning apparatus comprising in combination a compressor, a motor for driving the same, acooperating condenser, an enclosing cabinet a shell within said cabinet within which the compressor, motor and condenser are mounted, said-shell being open ended and spaced from the wall of the cabinet to provide for the passage of air between the shell and cabinet, and a fan adjacent the top of the shell for drawing air through said passage and up through the shell about said motor, compressor and condenser and discharging the air to the exterior of the cabinet.

2. Air conditioning apparatus comprising in combination a compressor, a motor for driving the same, a cooperating condenser, an enclosing cabinet, a yieldingly mounted shell within said cabinet within which the compressor, motor and condenser are mounted, said shell being open ended'and spaced from the wall of the cabinet to provide for. the passage of air between the shell and cabinet, and a fan adjacent the top of the shell for drawing air through said passage and up through the shell about said motor, compressor and condenser and discharging the air to the exterior of the cabinet.

3. Air conditioning apparatus comprising in combination a motor, a compressor driven thereby, a condenser, an enclosing cabinet, a shell within the cabinet spaced from, the cabinet walls to provide for the passage of air between the shell and cabinet, said motor, compressor and condenser being yieldingly mounted within said shell, 2. fan housing adjacent the top of said shell, and a centrifugal fan in said housing for drawing air into the cabinet, along the space between the cabinet and shell and from thence about the motor, compressor and condenser, into said housing from which it is discharged to the exterior of the cabinet. v

4. Air conditioning apparatus-comprising in combination, a compressor, a mot'onlfor driving the same, a fan for air cooling the motor and compressor, a housing for said fan, and gas conducting means in-thermal contact with said fan housing and in communication with the discharge side of said compressor.

I HENRY s. woopRUFF. 

